Hoist



Julie 30, 1925. 1,543,686

F. W. WENGRAF HOIST Original Filed Jan. 1920 Patented June 39, 1925.

UNITED STATES PATENT FREDERICK W. WENGRAF, OF NEW HAVEN, CONNECTICUT,ASSIGNOR TO WIL'HELMINE WENGRAF, OF CHICAGO, ILLINQIS.

Application filed January 2, 1920, Serial No. 348,929. Renewed November22, 1924.

To all whom it may concern:

Be it known that I, FREDERICK, IV. W'nm GRAF, a citizen of the UnitedStates, and residing at New Haven, county of New Haven, and State ofConnecticut, have made a certain new and useful Invention in I-Ioists,of which the following is a specification.

This invention relates to hoists and particularly to such hoists as areemployed in garages, machlne shops or the like for re- 7 tivearrangement of parts, all as will be more fully hereinafter set forth,as shown by the accompanying drawings, and finally pointed out in theappended claims.

Referring to the drawings Figure 1 is a view in front elevation of astructure embodying my invention.

Figure 2 is a sectional view on the line 2-2 of Figure 1, looking in thedirection of the arrows.

Figure 3 is a front view, partially in section, of the top point of thehoist support;

Figure 4 is a sectional view taken on the line 44 of Figure 3, lookingin the direction of the arrows.

The same part is designated by the same reference numeral wherever itappears through the several views.

It is among the special purposes of my present invention to provide ahoisting structure ofbut few parts which may be set up readily andquickly at any place where it is desired to lift a heavy object or pieceof machinery. While its use .is particularly adaptable for lifting theexplosion engines or motors from the chassis frame of automobiles, I donot desire to be limited or restricted in this respect.

In accordance with my invention I provide two, what I call seat joints 1and 2, each of which is provided with angularly disposed recesses 3adapted to receive therein vertically extending rods 4. The recesses 3may be disposed in any suitable angle relative to each other. Ahorizontal bar 5 is received in a recess 6 in the seat joints 1 and 2.The horizontal bar 5 may be loosely received in the recess 6 of the seatjoints 1 and 2, or it may be screwed therein as illustrated in Figure 3,wherein the recess 6 is provided wvith interior threads adapted tocooperate with exterior threads on the end of the horizontal bar v5. Byproperly proportioning the respective sizes of the vertical rods 4 andthe recesses 3 in the seat joints 1 and 2, a limited degree ofadjustment is secured between the vertical rods 4 at each end of thehorizontal bar 5. To lend strength and rigidity to the structure and tolock the respective arms 4 in their adjusted position, I provide collars7 on the horizontal bar 5 which are slidable adjustable therein and areconnected by means of levers 8 to collars 9 which are slidableadjustable on the vertical rods 4. The hoist proper is supported by arod 10, the ends of which pass preferably angular-1y through the seatingjoints 1 and 2, as illustrated in Figures 1 and 3 and are securedthereto by means of nuts 11. Any form of hoist may be employed inconnection with the support thus far described and for convenience sakeI have merely shown diagrammatically such a hoist 12 provided with ahook 13 which is removably secured to the rod 10.

To provide self adjustment of the hoist on uneven ground and to preventsliding of the vertical rods 4 on the surface of the ground, I provideat the lower ends of said rods feet 13dpivotally carried by the lowerend of the ro s.

A further feature of my invention is to provide means for detachablylocking the vertical members 4 in the seat joints 1 and 2. While thismay be accomplished in any number of ways I have shown one simplearrangement, to which, however, I do not wish to be limited orrestricted, wherein the top end of the rod members 4, as shown inFigures 3 and 4, is rounded, and a short distance below the end thereofis provided with a depression or annular recess. On the outer surface ofthe seating joints 1 and 2, I secure a spring actuated dog 14 with theprojection 15 thereof normally extending through the wall of the jointinto the recess 3 thereof. By this arrangement it will be seen that whenthe rods 4 are inserted in their recess 3 in the joints, the rounded endof the rod will force the dog and spring and 15 outwardly until therecess or depression in the rod 4: comes opposite the dog 15, thereuponthe dog 15 seats in the recess and locks the rods in their position. Thespring 14 may be provided with a suitable handle or knob to permit theplunger to be withdrawn from the recess of the rodl when it is desiredto disassemble the hoist support.

5 Many modifications and changes will readily occur tothose skilled inthe art without departing from the spirit and scopeof my invention asdefined in the claims, there fore what I claim as new and useful and ofmy own invention and .desire to secure by 7 Letters Patent is 1. Thecombination with a horizontal member, of joint members carried by theends thereof and having downwardly extending angularly disposed recessestherein,

supporting rods adapted to have their. free ends seated in saidrecesses, collars slidably mounted on said horizontal member and saidrods, means for locking said collars against movement, and tiespivotally connected atone end to said rod collars'and at their other endto the collar on'the hori- Zontal member, and means for supporting ahoisting device between said joint members.

2. In a hoisting support, a main horizontal bar, a sea-t joint for eachend of said bar, and having a threaded socket into which each end ofsaid main bar is adjustably held,

said seat joints being also provided with sockets disposed at an angleto each other and at right angles 'to said threaded socket, verticalstandards fitting into said sockets, spring clips for holding saidstandards in said sockets, and a depending tie bar fastened into saidseat joints for slidablyholding a hoisting element.

3. A seat joint for detachably holding a frame work, comprising a solidblock mem- FREDERICK W. VENGRAF.

